Yes of course it did, pseudoscience is very real!

 

All (SpeedyGonzalez-91) or nothing (GoWithTheFlow-87) with me... No middle man and not easy to find 93!



I agree with you, but remember that not always the difference of money spent on premium fuel returns benefits.
In my example, if I lived in the country side I could go premium as I think the truck would appreciate the freedom to rev. Here stuck in a crowded city, with packed stop-n-go traffic would be throwing money out the window. I need and I want a truck for my work, but I also want to save here and there - gas included. If premium was "cleaner" fuel than 87, well, then I'd prefer to use it of course, but that's not even the case to make me grin, from accelerating faster from one traffic light to the next 100 FT away.

 

You'll need to get a tuner. SCT is what I use. They will come with tunes for other octanes. But to really get the most out of 93, get a tuner and then get custom tunes from someone. Lots of options for tuning companies. 5STar, MPT, SSI, the list goes on. I have tunes for my truck from MPT. I am very happy with it.

I see a lot of threads for the newer trucks saying the Pedal Commander is really good. Biggest thing that I noticed with the tune was throttle response. The stock tunes neuter the throttle. If you floor it, the throttle doesn't open quickly. The stock tune is to squeeze as much MPG's as possible. Custom tunes squeeze as much HP as they can. (safely)

 

Hi Al
Thought you might be interested in the 5.0LHp & torque specs on E85
It is about a 10-15% increase in hp & torque when running E85
Lose about 20% i n fuel mileage
Where I live E85 is $2.499 & 91 octane is $3.499 to $3.799
So cost per mile is cheaper with E85 with more power
Found this link on the hp & torque for the 5.0L running E85

2011 Ford F-150 5.0-liter V-8 Gains Power Burning E85 Ethanol

Posted by Mike Levine September 22, 2010

Want to add power to Ford's all-new 5.0-liter V-8 for the 2011 F-150 without making a single hardware or software change? Just burn E85 ethanol fuel.

The 5.0 is rated at 360 horsepower (at 5,500 rpm) and 380 pounds-feet of torque (at 4,250 rpm) running on regular unleaded gasoline. It's positioned as the midrange, high-volume engine choice for the F-150, below the more powerful 3.5-liter EcoBoost V-6 (365 hp and 420 pounds-feet of torque) and conventional large-displacement 6.2-liter V-8 (411 hp and 434 pounds-feet of torque).

But the 5.0 is also flex-fuel capable. Flexible-fuel vehicles are designed to run on gasoline or a blend of up to 85 percent ethanol (E85).

Burning E85 fuel boosts 5.0 engine power to 375 hp and 390 pounds-feet of torque, said Mike Harrison, Ford's program manager for V-8 engines.

Ethanol has a higher octane and heat-of-vaporization point than gasoline, meaning it combusts at a higher temperature and with greater force (higher compression) than gasoline, while also having a greater capacity to cool the fuel/air mix in the cylinder before combustion. This inherent efficiency is what enables the 5.0 to produce more power while burning E85 instead of regular unleaded fuel.

I have always used the highest octane available in the six 3.5L ecoboost vehicles I have owned
Currently have a 2018 EXPY & 2018 F150 both with 3.5L ECOBOOST engines
Everyone to their own preferences though, but most engines will produce more power on the higher octane fuels

 

I stick with 87 octane, I have monitored the changes when running 87 vs 91 and yes the ECU does adjust the timing while running 91 but for me it wasn't worth it unless towing (much bigger change in timing while towing then when not).

*Up here is crazy gasoline price Canada 91 Octane is often 20% more expensive as well.

 

The modern Ford ECMs under heavy loads will both subtract or add ignition timing depending on feedback from the knock sensors. Adding ignition timing will improve both performance and fuel efficiency. However, it will only add when the load exceeds a certain threshold. Therefore, if you putt around all day and never get into heavy enough loads to enable additional timing, then there will be zero difference (and no, there is no significant energy content or rate of burn difference between low and high octane). However, if you have a heavier foot or are towing, then you could very well run in the region where it will add timing. If so, then higher octane will yield better economy and power. It's very difficult to determine if in your specific set of circumstances the fuel economy increase would offset the price increase, but it most likely won't in all but the most extreme conditions.

I've watched my Knock Retard while driving and the vast majority of time, it is inactive due to light load. In my case and most others, the net will be negative cost in running premium. However, I run premium to get the additional ignition timing at WOT for improved power.

 

When I run anything other than premium (I've not tried E85) it have a lot of detonation at tip in. Premium resolved that and the truck seems to drive better, so I run premium 100% of the time....No tune yet.

 

I'm at just 1,300 miles on my '18 5.0.
First half a tank on fill from dealer motor ran rough
Topped it off with 93, and have been alternating 87 / 93 at half tank.

I have never seen E85, but then again I've never really looked for it.
I will try it when I find some.

 

87 and no problems whatsoever. Even used 87 while towing my 7500# boat/trailer.

 

Couldn't resist, especially when the tank was almost empty.
She's full of 93 now. I feel a bit richer and poorer, but it was way overdue for some love..